Finding the Fourth Proportional to 451,647, 623,272.86 and 250,443

Step by Step Solution

1. Step 1: Write the proportion equation
   451,647 : 623,272.86 = 250,443 : x
2. Step 2: Convert to fraction form
   451,647/623,272.86 = 250,443/x
3. Step 3: Cross multiply
   451,647x = 623,272.86 × 250,443
4. Step 4: Simplify right side
   451,647x = 156,094,324,876.98
5. Step 5: Solve for x
   x = 156,094,324,876.98/451,647
6. Step 6: Final answer
   x = 345,611.34